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After a soggy & chilly weekend, drier & warmer conditions will return to the Northeast later Monday. Details. Chevron right

O'Fallon, IL

66°F
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O'Fallon

Illinois

66°
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O'Fallon, IL Weather
Today WinterCast Local {stormName} Tracker Hourly 10-Day Radar MinuteCast® Monthly Air Quality Health & Activities

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Winter Center
Today Hourly 10-Day Radar MinuteCast® Monthly Air Quality Health & Activities
Sunday, May 24

Current Weather

10:28 PM

66°F
Clear
RealFeel® 65°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
RealFeel®
65°
Wind
NE 2 mph
Wind Gusts
5 mph
Humidity
73%
Indoor Humidity
68% (Slightly Humid)
Dew Point
57° F
Pressure
↔ 30.04 in
Cloud Cover
0%
Visibility
17 mi
Cloud Ceiling
33500 ft

Night

5/24
58°Lo
RealFeel® 59°
Cool
RealFeel Guide
Cool
53° to 62°
Light jacket or sweater may be appropriate.
LEARN MORE
Partly cloudy

WindE 5 mph

Wind Gusts8 mph

Probability of Precipitation1%

Probability of Thunderstorms0%

Precipitation0.00 in

Cloud Cover20%

Evening

Overnight

Sun & Moon

14 hrs 31 mins
Rise 5:41 AM
Set 8:12 PM
Waxing Gibbous
Rise 2:01 PM
Set 2:30 AM

Temperature History

5/24
High
Low
Forecast
82°
58°
Average
81°
58°
Last Year
74°
55°
Record
98°
2019
43°
2013

Current Weather Conditions in O'Fallon

O'Fallon, Illinois is currently Clear with a temperature of 66°. The current RealFeel® Temperature is 65° (Pleasant) based on observed conditions including 73% humidity, 0% cloud cover, a UV index of 0, and winds of 2 mph. In shade, the RealFeel Shade™ is 65°. AccuWeather's MinuteCast® provides minute-by-minute precipitation forecasts for O'Fallon, powered by forecasting systems and proprietary technology developed by AccuWeather meteorologists since 1962.

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World North America United States Illinois O'Fallon

Weather Near O'Fallon:

  • O'Fallon, MO
  • St. Charles, MO
  • St. Louis, MO
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